Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
(inorganic) + 20 kg N/ha (FYM), T9-25:25 kg NP/ha (inorganic) + 25 kg N/ha (FYM), T10-
30:30 kg NP/ha (inorganic) + 30 kg N/ha (FYM), T11-20:20:10 kg NPK/ha (inorganic) + 20 kg
N/ha (FYM), T12-25:25:12.5 kg NPK/ha (inorganic) + 25 kg N/ha (FYM) and T13-30:30:15 kg
NPK/ha (inorganic) + 30 kg N/ha (FYM). Soil of the experimental field was sandy loam and
having low organic carbon (0.16%), low available N (112 kg/ha), medium available P (17.0
kg/ha) and high available K (436 kg/ha) with a pH of 7.8. Indian mustard variety ‘RH 725’ was
sown on 23 October 2020 and harvested on 22 March 2021. The row spacing was 45 cm keeping
a 5 kg seed rate/ha. Total rainfall of 38.4 mm was received during the crop growth period. The
other agronomic practices were followed as per production recommendations during the crop
growth period. All the fertilizers in the form of Urea, SSP and FYM were applied at the time of
sowing the crop.
Results
Different nutrient management treatments had higher growth and yield attributes of Indian
mustard over control. Application of 30:30:15 kg NPK/ha (inorganic) + 30 kg N/ha (FYM)
recorded significantly higher plant height, number of primary branches per plant, and siliquae
per plant over the rest of treatments and were at par with application of 25:25:12.5 kg NPK/ha
(inorganic) + 25 kg N/ha (FYM), 30:30 kg NP/ha (inorganic) + 30 kg N/ha (FYM) and 60:30:15
kg NPK/ha treatments. Application of 30:30:15 kg NPK/ha (inorganic) + 30 kg N/ha (FYM)
recorded significantly higher seed yield (3161 kg/ha) and stover yield (7901 kg/ha) of mustard
compared to other treatments except treatment receiving 25:25:12.5 kg NPK/ha (inorganic) + 25
kg N/ha (FYM), 30:30 kg NP/ha (inorganic) + 30 kg N/ha (FYM), 25:25 kg NP/ha (inorganic) +
25 kg N/ha (FYM) and 60:30:15 kg NPK/ha. Varma et al. (2021) also found that integrated
nutrient management improved the yield attributes and yield of Indian mustard. Higher net
returns of ₹ 117353/ha were also recorded with the application of 30:30:15 kg NPK/ha
(inorganic) + 30 kg N/ha (FYM). However, the highest BC ratio (4.62) was observed with the
application of 60:30:15 kg NPK/ha (inorganic).
Conclusion
Application of 30:30:15 kg NPK/ha (inorganic) + 30 kg N/ha (FYM) resulted in significantly
higher yield attributes and yield of Indian mustard. Similarly, higher net returns were also
recorded with the application of 30:30:15 kg NPK/ha (inorganic) + 30 kg N/ha (FYM) under
sandy loam soils in arid/semi-arid regions. The highest BC ratio was observed with the
application of 60:30:15 kg NPK/ha (inorganic).
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